1st Line Of Defense

Question 1

What are the main different between innate immune system and adaptive immune system, explain why?

Answer 1

1. Innate is non specific immunity whereas adaptive is specific
2. Innate is faster as its not specific whereas adaptive is slower but faster later
3. Innate doesn’t have any immunological memory whereas adaptive has immunological memory
4. Innates defense is not long lasting whereas adaptive is long lasting bc of memory cells
5. Innate occurs at the site of infection whereas adaptive occurs in secondary lymphnoid organ

Question 2

What are the similarities between innate and adaptive

Answer 2

1. Provides protection agaisnt pathogen
2. Both can destroy intracellular and extracelullar Pathogens.
3. Both targets non self antigens

Question 3

What are the main barriers in the 1st LOD

Answer 3

1. Physical is to prevent entry of pathogen via body
2. Chemical barriers uses enzyme to kill pathogen and prevent invasion
3. Involves floran body

Question 4

Give 2 examples each for barriers in animals

Answer 4

Physical: coughing, sneezing, nose hair, intact skin
Chemical: lysosomes (tears, sweat), sebum
Microbiological barrier: flora in vagina and mouty

Question 5

2 examples of barriers each in plants

Answer 5

Physical: sunken, hairy stomata, waxy surface
Chemical: caffeine, cintronella